Mechanical oven.



1110140395. I PATENTED 0016,1903. .P. P. GARROLL- MECHANICAL OVEN.

APPLIGATIOH FILED SEPT. 15. 1902 N0 MODEL.

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Patented October e, 1903.

PATENT OEEicE.

PHILIPF. CARROLL, OF JOLIET, ILLINOIS.

MECHANICAL OVEN.

creole-reaction forming part of Letters Patent No. 740,395, datedOctober e, 1903,.

' Application filed September 15, 1902. Serial No.'l28,395. (No model.)

To all whom it may concern.-

Be it known that I, PHILIP F. CARROLL, a citizen of the UnitedStates,residing at J oliet, in the county of Will and State of Illinois,have invented certain new and useful Improvements in Mechanical Ovens,of which the following is a specification.

My invention relates to improvements in the construction and arrangementof mechanical ovens especially designed for baking bread, cakes,biscuit, and the like; and the especial objects of my improvements areto provide an oven of this class of simple and economical constructionand operation from which the products may be quickly and readily removedand from which the minimum amount of heat may escape when the pans arebeing loaded and unloaded.

Having the aforegoing and other objectsof novel and useful scope inview, I have designed the oven hereinafter describedin detail, andillustrated in the accompanying drawings, which form a part of thisapplication, and in which Figure 1 is a view, partly in longitudinalvertical section and partly in side elevation, of an oven constructedand equipped according to my invention. Fig. 2 is a view, partly infront elevation and partly in section, of my improved oven.

Referring to the'drawings in detail, Arepresents a bake-oven constructedchiefly of brick in rectangular form and in any desired size andproportions. With the oven is shown a furnace B, from which leadheat-fines b, which are so arranged relative to the even that they willconduct thereto the maximum amount of heat, the arrangement of suchfurnace and tlues forming, however, no part of the claimed invention. Inthe front wall of the oven an opening is left which is provided with aframe 0, constructed of iron and of suitable size to permit the loadingand unloading of the pans to be described,which extend nearly the widthof the oven. There are two openingsiu the frame, the upperopening 0being adapted to permit the loading of the pans and the lower opening 0afiording an exit for the baked products. The opening a is closable by averticallysliding iron door D,which movesin suitable slideways d on theframe and is suspended 'from a cable (1', which passes over a pulley 01secured to the head of the frame and has a weight (1 attached to itsfree end, said weightadapted to counterbalance the door D. A barcextends across the frame and forms a sill for the door D and subdividesthe frame, so that the openings c and c are formed.

The opening 0 is closable by means of a hinged door E, the pivotal orhinge pin of which extends across the frame at the bottom of the opening0 This door is operated by means of a lever e secured to the door in anysuitable manner and projecting outwardly in a manner to permit of itsbeing manipulated by hand. The upper edge of the door E has aninwardly-extending flange e, upon which the front edge of the pans restwhen they are being loaded, but which is moved out of the path of thepans by depressing the lever e When the products have been baked and itis desired to unload the pans, by raising the lever the flange e engagesthe front edge of a pan and tilts the latter, as shown by dotted linesin Fig.

1, thus-bringing the pan and door in the same inclined plane andpermitting the products to slide from the pan onto a tray or preferablyonto the conveying or removing means which I have provided.

To remove loaves of bread, rolls, or biscuit and similar products, Iprovide across the front of the oven a trough or chute F, constructed ofany suitable material, with closed sides and bottom, but open top.Mountedin this chute is an endless carrier f, supported on rollers f anddriven by any suitable means. The trough or chute and the carriermounted therein are so positioned that the loaves, &c., will slide fromthe door E directly onto the carrier and thus be quickly removed andconveyed to boxes arranged at the unloading end of the carrier, thusconsu ming but little time, and therefore allowing the escape of butlittle heat during such unloading. By placing the unloading-opening atthe bottom of the oven it will be apparent that the minimum amount ofheat will escape while such opening is uncovered. It is also apparentthat the relative arrangement of the loading and unloading doors oropenings is such that while the loaves, &c., are being removed at thelower opening the empty pans may be loaded at the opening above.

The pans P may be of any desired form and are suspended to swing fromthe pins 8 of the sprocket-chains S, which are mounted to travel overthe sprocket-wheels G, H, and J, which are arranged as shown. The shaftg of the sprocket-wheel G has keyed thereon a drive-gear 9 the teeth ofwhich mesh with the teeth of the pinion 9 which in turn is driven by agear g mounted on a suitablydriven shaft g The wheel H is mounted in thelower part of the oven and the wheel, J in the upper and rear part inthe same horizontal plane with the wheel G, thus causing thesprocket-chains, and hence the pans suspended therefrom, to travel in atriangular plane. By this novel arrangement I bring but one pan oppositethe unloading-door at a time and am permitted to carry on all theunloading at the bottom of the oven. A further advantage of thisconstruction is that the products travel the greatest distance in thehottest part of the oven; hence bake quickly. A still further advantageis that the products are gradually conveyed from the lowest, andtherefore least hot, portion of the oven to the upper, and hencehottest, part of the oven, whereby they are subjected to the varyingdegrees of heat prevailing at the difierent heights in the oven, acondition which has not heretofore applied to the horizontal type ofmechanical ovens, but has been found only in the vertical or reel-forms.

It is apparent that various modifications of details may be made in theconstruction herein described without departing from the essentialfeatures of my invention, which I claim as follows:

1 In a mechanical oven havinga dischargedoorway for the baked products,a series of swinging pans adapted to traverse the oven and besuccessively presented at said doorway, and a closure for said doorwayadapted when opened to tilt said pans to discharge the contents thereof.

2. In a mechanical oven having separate loading and discharge doorwaysand separate doors therefor, a series of swinging pans adapted totraverse the oven and be successively presented at said doorways, andthe door for thedischarge-doorwayadapted when opened to operate the pansto discharge the contents thereof.

3. In a mechanical oven having an unloading-opening,aseries ofswingingpans adapted to travel in a triangular-plane only one point of which isopposite said opening, a closure for said opening said closure adaptedto en: gage the. front edge of said pans in succession and to tilt samesubstantially in the manner and for the purpose set forth.

4. In a mechanical oven havinga doorway in its lower part, said doorwaydivided into an upper part for loading the oven-pans, and into a lowerpart for unloading said pans, a sliding closure for the upper part andan inwardly-swinging closure for the lower, substantially as described.

5. In a mechanical oven havinga doorway in its lower part,.a hinged doorfor the lower part of said doorway, a series of pans adapted to travelin a triangular plane one point of which is opposite said lower part,said door adapted to tilt said pans in succession.

6. In a mechanical oven, a series of pans mounted to swing horizontallyfrom an endless traveling belt, means for tilting said pans wherebytheir contents will be discharged by gravity said means consisting of aninwardlyswinging door, and a traveling carrier adapted to receive thecontents of said pans as discharged.

In testimony whereof I affix my signature in presence of two witnesses.

PHILIP F. CARROLL.

Vt itnesses: I

R. G. ROBERTS, F. BENJAMIN.

